Is there a difference in the satisfaction rating of traditional cellphone providers who bill for service at the end of a month often under a contract and prepaid cellphone service providers who bill in advance without a​ contract? The accompanying table contains the satisfaction rating for 10 traditional cellphone providers and 13 prepaid cellphone service providers.   (the last answer was wrong for the test statistic. Correct is -0.33) could you help with next question ?    b.) What​ is/are the critical​ value(s)?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Related questions
Question
Type of Provider
Rating
 
Traditional
89
 
Traditional
87
 
Traditional
78
 
Traditional
78
 
Traditional
77
 
Traditional
74
 
Traditional
74
 
Traditional
71
 
Traditional
67
 
Traditional
65
 
Prepaid
89
 
Prepaid
87
 
Prepaid
82
 
Prepaid
82
 
Prepaid
79
 
Prepaid
77
 
Prepaid
75
 
Prepaid
75
 
Prepaid
75
 
Prepaid
73
 
Prepaid
72
 
Prepaid
69
 
Prepaid
 

Is there a difference in the satisfaction rating of traditional cellphone providers who bill for service at the end of a month often under a contract and prepaid cellphone service providers who bill in advance without a​ contract? The accompanying table contains the satisfaction rating for

10 traditional cellphone providers and 13 prepaid cellphone service providers.
 
(the last answer was wrong for the test statistic. Correct is -0.33) could you help with next question ? 
 
b.) What​ is/are the critical​ value(s)?
 
​(Use a comma to separate answers as needed. Round to two decimal places as​ needed.)
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